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Hire Application Security Engineers

Hire Application Security Engineers | Application Security, Secure Development, Vulnerability Protection

Strengthen application security with experienced engineers who integrate security across development, identify vulnerabilities, and help protect applications throughout their lifecycle. Pre-vetted specialists embed in your team on flexible terms, so security keeps pace with delivery.

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Why Teams Choose AppStudio to Hire Application Security Engineers

Security Built Into the SDLC

Our engineers embed security into how you already build, threat modeling, secure design, code review, and testing in the pipeline, so protection is part of delivery rather than a gate bolted on at the end.

Vulnerabilities Found Before Attackers Do

SAST, DAST, dependency and secrets scanning, and manual review are used together to surface real, exploitable issues, with the noise filtered out so your team fixes what actually matters.

Fluent in Your Stack and Its Risks

We match engineers to your languages and frameworks and the specific risks they carry, from injection and broken auth to insecure dependencies, so findings arrive with fixes that fit your code.

Fixers, Not Just Flaggers

Hired security engineers join your repositories, reviews, and standards and remediate alongside your developers, so issues get closed rather than piling up in a report nobody actions.

Services

Application Security Hiring Options We Offer

Hire Application Security Engineers

Threat modeling, secure design review, and code review for each release.
SAST, DAST, and dependency findings verified and fixed in your repos.
OWASP Top 10 and ASVS controls applied to web and mobile apps.

Hire Dedicated AppSec Engineers

One engineer in your sprints, stand-ups, and pull-request reviews.
Owns your threat model, risk register, and security backlog.
Reviews each new feature, dependency, and third-party integration.

Hire Senior & Lead AppSec Engineers

Defines secure-coding standards, ASVS baselines, and approved-library lists.
Leads threat modeling and design reviews for high-risk features.
Runs a security champions program using your team's real findings.

Hire an Application Security Team

AppSec, DevSecOps, and secure code review roles staffed as one pod.
Shared roadmap for secure SDLC, tooling, and vulnerability management.
Sprint reporting on open criticals, remediation time, and scan coverage.

Hire Secure Code Reviewers

Manual review of authentication, session handling, and access-control logic.
Injection, crypto misuse, and business-logic flaws flagged by file and line.
Fixes proposed as code suggestions directly in the pull request.

Hire SAST & DAST Specialists

SonarQube and Checkmarx rules tuned to your frameworks to cut false positives.
Authenticated Burp Suite and OWASP ZAP scans against staging builds.
Duplicate findings merged across scanners into a single triage queue.

Hire Threat Modeling Experts

STRIDE threat models built from architecture and data-flow diagrams.
Trust boundaries, abuse cases, and attack paths documented per feature.
Mitigations written as testable security requirements in your backlog.

Hire API Security Engineers

OAuth 2.0, OIDC, and JWT validation reviewed on every endpoint.
BOLA and function-level authorization tested against the OWASP API Top 10.
Rate limits, schema validation, and gateway policies configured per route.

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Hire DevSecOps Engineers

SAST, SCA, and secrets scanning gated in GitHub Actions or GitLab CI.
Container images and IaC scanned with Trivy before each deploy.
Pull requests blocked on critical and high-severity findings.

Hire AppSec for Compliance

Application controls mapped to SOC 2, PCI DSS 4.0, and HIPAA.
Audit evidence from scan reports, review records, and remediation tickets.
Secure SDLC policies written and enforced in your delivery workflow.

Hire AppSec Engineers for Remediation

Findings backlog ranked by CVSS score, exploitability, and asset exposure.
Root-cause fixes merged with tests that reproduce the vulnerability.
Retest and regression checks before each finding is closed.

Hire Cloud Security Engineers

Least-privilege IAM roles and service permissions across AWS and Azure.
Secrets moved into HashiCorp Vault with rotation and scoped access.
Docker images and Kubernetes clusters hardened with admission policies.

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One partner to hire application security engineers, embed them in your pipeline, and keep your applications defended as they change.

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Their security engineer threat-modeled our platform, wired scanning into CI, and cleared our high-severity backlog before the SOC 2 audit. Security stopped being the thing that blocked releases.

CISO, Fintech Platform, New York

Solving the Application Security Hiring Challenges That Others Overlook

Business Priorities

Industry Gaps

A manual gate right before release

A raw scanner dump nobody reads

Generic, copy-paste advice

A report and then goodbye

Design flaws discovered in production

A point-in-time pentest only

A separate security silo

Our Proven Advantage

SAST, DAST, and checks automated in CI/CD

Exploitable issues prioritised, with fixes

Remediation matched to your stack

Hands-on developers who remediate, not only flag

Threat modeling before the build starts

Design, build, deploy, and run secured

In your repositories, reviews, and standards

Global Standards. Built-In Trust.

We operate with the highest levels of security, privacy, and quality, backed by globally recognized certifications. Our standards are built to meet the compliance and regulatory requirements of larger organizations across industries.

Book a Free Application Security Consultation

Pick a time that works for you and walk through your applications, threat model, and security gaps with one of our hiring advisors. You will leave with a clear read on the roles you need and a practical next step, with no obligation.

Rated Among the Top Application Security Hiring Partners

Teams choose AppStudio to hire application security engineers because we combine rigorous security screening, hands-on remediation, and responsive account support, so risk goes down from week one instead of accumulating in a report.

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The Security Tooling Our Engineers Work With

We match engineers to your stack and its risks. Here are the tools our application security engineers use to test, secure, and monitor software across its lifecycle.

SonarQube

Snyk

OWASP ZAP

Burp Suite

Checkmarx

Java

Python

JavaScript

HashiCorp Vault

OAuth 2.0

JWT

Keycloak

AWS

Azure

Docker

Kubernetes

GitHub Actions

GitLab

Trivy

Dependabot

Splunk

Elastic

Datadog

Grafana

How We Help You Hire Application Security Engineers

An application security engineer is only useful if they know how your stack gets attacked and work inside your delivery process. At AppStudio, every placement follows the same five stages.

Each stage produces something you can review: a role scorecard, assessment results, interview feedback, an onboarding plan, and monthly risk reporting.

We map your applications, languages, cloud platforms, and compliance drivers such as SOC 2 or PCI DSS, then rank the top threats. The output is a scorecard of skills, seniority, and 90-day goals.

Candidates review a vulnerable codebase, threat-model a sample feature, and triage real SAST and DAST output. A certified application security engineer takes the same tests, as credentials alone do not show code-review depth.

You receive a shortlist with assessment scores and sample code reviews. For a senior application security engineer, we add a design-review session with your architects, then collect panel feedback.

The engineer gets least-privilege access to repos, pipelines, and scanners under a signed NDA. The first week has a set goal: a threat model of a critical service or a findings-backlog triage.

Monthly reviews track open critical findings, mean time to remediate, and scan coverage. Your account manager handles scaling, role changes, and a replacement engineer if the match does not work out.

Proven by Results

Security engineers who reduce real risk, not just file findings.

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of clients extend or expand the security engagement beyond the first hire

average reduction in open high-severity findings within the first quarter

of hired security engineers work under signed NDAs with least-privilege access

How We Deliver Value, in Our Clients’ Words

Daniel Okafor

CISO, Fintech Platform, New York, NY

“Their security engineer threat-modeled our platform, wired scanning into CI, and cleared our high-severity backlog before the SOC 2 audit. Security stopped being the thing that blocked releases.”

Priya Nair

VP Engineering, Healthtech, Toronto, ON

“We needed someone who could secure a HIPAA-facing app without slowing the team. The AppStudio engineer built threat models into our sprints and the developers actually learned from the reviews.”

Sophie Laurent

Head of Security, SaaS Company, London, UK

“Our scanner was drowning us in findings. Their AppSec engineer triaged the real risk, fixed the root causes, and set up guardrails so the noise stopped coming back.”

Marcus Reilly

Engineering Director, E-commerce, Chicago, IL

“The API security work paid for itself. Broken authorization we had missed for months got caught and fixed, and our OWASP API Top 10 exposure dropped sharply.”

Hannah Weber

CTO, Insurtech, Berlin, DE

“A genuine security engineer, not a checkbox auditor. They pushed back on insecure design early and gave our developers patterns to reuse, so new features ship more securely by default.”

Arjun Mehta

Security Lead, Logistics Platform, Singapore

“DevSecOps done right. Dependency and container scanning now run on every merge, and we catch vulnerable packages before they ever reach production.”

Elena Rossi

Head of Engineering, Digital Health, Sydney, AU

“They cleared our penetration-test findings and, more importantly, fixed why they happened. The retest came back clean and our auditors were satisfied.”

Thomas Byrne

VP Product, Payments, Austin, TX

“Secure code review from someone who writes code. The fixes were practical and merged fast, and our engineers trust the feedback because it is specific to our codebase.”

Industries We Hire Application Security Engineers For

AppStudio matches application security engineers to each industry's threat profile and compliance obligations, so the people you hire understand the attacks, data sensitivity, and audits your sector actually faces.

Accounting & Financial Services

PCI DSS 4.0 controls for card data, tokenization, and payment flows.
MFA, transaction signing, and session controls against account takeover.
Tamper-evident audit trails for transactions and account changes.

Healthcare & Life Sciences

PHI encryption and access logging across patient apps and FHIR APIs.
HIPAA-aligned security controls with review records for auditors.
Threat models for telehealth, patient portals, and device integrations.

Retail & Consumer Commerce

Checkout flows hardened against card testing and skimming scripts.
Credential-stuffing and bot defenses on login and loyalty accounts.
API security for storefront, inventory, and marketplace integrations.

Government & Public Sector

Citizen portals tested against OWASP ASVS and agency security baselines.
Identity federation, MFA, and role-based access for public services.
Personal data encrypted and every access recorded in audit logs.

Telecom & Connectivity

Self-care apps and subscriber portals protected against SIM-swap fraud.
Rate limiting and abuse detection on high-volume carrier APIs.
Service-to-service authentication and secrets rotation across carrier microservices.

Education & eLearning

Student records protected with role-based access and encryption at rest.
SSO and LTI integrations secured across learning platforms.
Exam and assessment platforms checked for tampering and answer leaks.

Travel, Hospitality & Aviation

Booking, payment, and loyalty flows tested for points and refund fraud.
Partner API security across GDS, OTA, and airline integrations.
Traveler profiles and saved cards locked down with step-up authentication.

High-Tech, SaaS & Software Product Companies

Tenant isolation tested at the API, query, and storage layers.
Security gates built into daily and weekly release pipelines.
SOC 2 Type II evidence collected from reviews and scan reports.

Media & Entertainment

Signed URLs and token auth protecting paid streaming content.
Credential-sharing, scraping, and bot abuse controls on user accounts.
Playback and content APIs secured against hotlinking and replay.

Legal Services & Law Firms

Document-level access control and encryption for client matter files.
Client portals with MFA, audit logs, and expiring share links.
Security reviews of e-discovery and document management integrations.

Manufacturing & Industrial

Code and design reviews for MES, supplier portals, and connected-device apps.
Segmented, authenticated APIs between IT systems and OT networks.
Signed firmware updates and device authentication flows tested for bypass.

Energy, Oil & Gas

Field and SCADA-connected apps reviewed for access-control flaws.
MFA-protected remote access and operator logins for critical systems.
Logging and monitoring aligned with NERC CIP where it applies.

Security Hiring That Reduces Risk, Not Just Paperwork

A security hire that only produces reports leaves you with a longer to-do list and the same exposure. When you hire application security engineers through AppStudio, you get vetted specialists who embed in your pipeline, find the issues that actually matter, and fix them alongside your developers, so your posture improves rather than just being documented.

That is the point of this page: real security depth, flexible engagement, and a prompt replacement if the fit is not right. Whether you need one engineer to clear an audit backlog or a team to stand up a secure SDLC, we shape the engagement around your applications and risks, and you stay in control of code, priorities, and reviews throughout.

Need related work too? Explore cybersecurity services, vulnerability management, cloud security, DevOps, and IT staff augmentation, or book your free consultation.

Book a Free Consultation →

Application security engineers reviewing code with a development team

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Frequently Asked Questions

Secure coding and code review across common languages, threat modeling, SAST and DAST, dependency and secrets scanning, API and authentication security, DevSecOps in CI/CD, and cloud application security, mapped to standards like the OWASP Top 10. We match the specific skills your applications and risks call for.

A penetration tester finds and reports weaknesses at a point in time. An application security engineer works inside your development lifecycle, designing controls, reviewing code, modeling threats, and fixing issues so they do not recur. Both are useful; if you want risk reduced continuously rather than a periodic report, you want an AppSec engineer.

Yes, and that is the core of the role. Scanners catch a slice of issues; our engineers add manual review for auth, session, crypto, and business-logic flaws, and run threat models at design time so problems are caught before they are built.

Yes. We wire SAST, dependency, secrets, and container scanning into your pipeline, tuned to cut false positives, with guardrails that fail a build on real risk. Security becomes part of every merge rather than a manual gate before release.

Yes. We triage the backlog by real, exploitable risk rather than raw severity, fix root causes instead of one-off patches, and add regression checks so the same issues do not reappear, so the number goes down and stays down.

Yes. We match engineers to your languages, frameworks, and architecture and the vulnerability classes they attract, from injection and broken access control to insecure deserialization and vulnerable dependencies, so findings come with fixes that fit your code.

Yes. Our engineers map application security controls to the framework you answer to, build the practices and evidence auditors expect into delivery, and close the gaps a readiness assessment surfaces, so the audit is a review rather than a scramble.

Both. Add a single specialist to clear an audit backlog or embed one in your team, or bring on a pod covering AppSec, DevSecOps, and review to stand up a secure SDLC. We size the engagement to your risk and roadmap.

Hands-on secure-coding and vulnerability-analysis exercises, a threat-modeling and code-review assessment, tooling depth, and a communication check, plus reference checks. We vet for demonstrated security judgement, not just a certificate.

Done right, the opposite. By shifting security left, into design, code review, and automated pipeline checks, issues are caught cheaply and early instead of blocking a release at the end, so teams ship securely without a late-stage security bottleneck.

Hired engineers work under signed NDAs with least-privilege, auditable access to only what they need, and all findings, code, and documentation are yours. We handle your systems as carefully as you would expect a security team to.

Tell us your applications, stack, and the security outcome you need, whether that is an audit, a backlog, or a secure SDLC. We source against an agreed scorecard and present vetted security engineers, usually within days.

Request an Application Security Hiring Consultation

Tell us about the security skills, seniority, and timeline you need using the form below and our hiring team will reach out to discuss your applications, risks, and the approach that fits best.

Hire Application Security Engineers